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uk.sci.weather (UK Weather) (uk.sci.weather) For the discussion of daily weather events, chiefly affecting the UK and adjacent parts of Europe, both past and predicted. The discussion is open to all, but contributions on a practical scientific level are encouraged. |
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Sorry for the late report but there was something a little unusual at
sunset last night as observed from hills just west of Winchester. Visibility was generally goodish but towards the WNW (where the sun was going down) was a patch of quite thick haze. The sun dimmed noticeably as it sank through that haze, and then became brighter again as it emerged from it. It was definitely not a cloud effect - the sun looked like it did on a hazy day as it sank through the haze rather than looking as it does through cirrus. I also thought I saw what looked like smoke emanating from very low in the WNW, in the clearer air below the haze patch. Would this have been a patch of water vapour from a chimney somewhere (at an estimate, the Bristol area), forming a small patch of poor visibility? Nick |
#2
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"Nick" wrote in message
... Sorry for the late report but there was something a little unusual at sunset last night as observed from hills just west of Winchester. Visibility was generally goodish but towards the WNW (where the sun was going down) was a patch of quite thick haze. The sun dimmed noticeably as it sank through that haze, and then became brighter again as it emerged from it. It was definitely not a cloud effect - the sun looked like it did on a hazy day as it sank through the haze rather than looking as it does through cirrus. I also thought I saw what looked like smoke emanating from very low in the WNW, in the clearer air below the haze patch. Would this have been a patch of water vapour from a chimney somewhere (at an estimate, the Bristol area), forming a small patch of poor visibility? Nick .... we get this effect when there are large heath fires around - the evening inversion traps the smoke particles given the haze effect. Also seen this in Nottinghamshire, Lincolnshire & South Yorkshire back in the 1970s/1980s, when widespread stubble burning of fields was normal practice. Martin. -- Martin Rowley West Moors, East Dorset (UK): 17m (56ft) amsl Lat: 50.82N Long: 01.88W NGR: SU 082 023 |
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